【摘要】 非洲某花岗伟晶岩型锂辉石矿锂矿中的锂主要以锂辉石和透锂长石的形式赋存。该矿采用常规重选—浮选工艺试生产多年，未能获得良好选矿指标。本试验采用重介质—浮选联合工艺和选择捕收性能良好的组合捕收剂LA+LB进行选矿研究。在原矿Li₂O品位1.31%条件下，重介质作业可获得Li₂O品位4.05%、回收率27.82%的透锂长石精矿，浮选作业可获得Li₂O品位6.01%、回收率41.44%的锂辉石精矿，Li₂O总回收率69.58%。与单一浮选工艺比较，重介质—浮选联合工艺可额外获得透锂长石精矿，Li₂O总回收率提高了28.22%。更多还原

【Abstract】 The lithium in the lithium deposit of a granitic pegmatite-type spodumene ore in Africa primarily occurs in the forms of spodumene and petalite. Conventional gravity separation and flotation processes have been trialed for years but failed to achieve satisfactory beneficiation results. In this study,a combined dense medium separation（DMS）-flotation process and a selective collector system（LA+LB） with excellent collecting performance were employed for beneficiation research. Under the condition of a raw ore Li₂O grade of 1. 31%,the DMS process yielded a petalite concentrate with a Li₂O grade of 4. 05% and a recovery rate of 27. 82%,while the flotation process produced a spodumene concentrate with a Li₂O grade of 6. 01% and a recovery rate of 41. 44%. The overall Li₂O recovery reached 69. 58%. Compared to the single flotation process,the combined DMS-flotation process additionally recovered petalite concentrate and increased the overall Li₂O recovery by 28. 22%.更多还原